THE RESULTS OF PRACTICAL STUDIES OF THE IMPACT ON THE CLEANING EFFICIENCY OF THE BUFFER DRUM INSTALLED IN THE MINE

ABSTRACT

The article presents analyzes of ways to improve the performance of the cotton gin and, as a result, the results of a practical experiment to improve cleaning efficiency by installing a buffer drum at the supplier. In this regard, it is advisable to set the height of the buffer drum above the feeder for high technical grades of raw cotton 150 mm, for low technical grades - 180 mm.

АННОТАЦИЯ

В статье представлены анализы способов повышения производительности хлопкоочистителя и, как следствие, результаты практического эксперимента по повышению эффективности очистки за счет установки буферного барабана на поставщике. В связи с этим целесообразно устанавливать высоту буферного барабана над питателем на высоких технических сортах хлопка-сырца 150 мм, на низких технических сортах - 180 мм.

Keywords: feeder, drum, buffer, cleaning action, rollers, pile drum.

Ключевые слова: питатель, барабан, буфер, очищающее действие, вальцы, ворсовый барабан.

In order to carry out pilot work on the stationary conveyor of the cotton ginning enterprise of the Pakhtakor TEKS LLC cluster in the Jizzakh region and the modernized mine-supplier-heater for the UCC, cotton ginning equipment 1XK with 4 pile drums was installed. systems in production have been installed (Fig. 1).

For the experiment, the optimal air temperature in the heater shaft of the cotton spinner was set equal to 120⁰C [1-5]. The experiments were carried out on the breeding variety Sultan, II- and IV-industrial varieties, in which the moisture content of the II-industrial variety was 13.8%, the weediness was 6.8%, the moisture content of the IV-industrial variety was 17.6%, and the weediness was eight 12 %.

The change in cotton quality indicators was studied depending on the technological process of primary processing of cotton according to the current and proposed technologies, the results of the experiments are presented in Table 1 and in Figures 2-7.

Figure 1. General view of the heating cleaner from small impurities, prepared in the proposed design

Table 1.

Results of experiments conducted in production

We analyze the obtained results in the form of a histogram. Below are the results obtained with changes in wetness, soiling and cleaning performance.

Figure 2. Changes in the moisture content of cotton raw materials after the applied technological process

Figure 3. Changes in the moisture content of cotton raw materials after the recommended technological process

On fig. 2 and fig. 3, in the form of a histogram, moisture changes are analyzed after the primary processing of cotton and after the proposed design. As can be seen from the histogram of the technological process during operation, the moisture content of the cotton sample taken from the cotton gin was 13.8%, and the moisture content of cotton after the 1XK cotton gin installed on a stationary spinning machine in the air. the transport system accounted for 13.5%. At the next stage, the moisture content of cotton after the dryer drum is 8.2%, and after the UXK filler - 8.0% [6-9]. 

We see that the moisture content after 1XK was 10.4% in cotton of the II grade, 2nd class compared with the existing technological process, since the cleaning of cotton was carried out by heating in the 1XK cleaner with a 4-pile drum installed on a stationary spinning machine in recommended mode. technology. After passing through the transshipment and after the drying drum 2SB-10, the humidity is 7.8%, from the UXK cleaning system 7.7% [10]. Similarly, the moisture content of cotton grade IV, class 2 after the technological stages is 12.6; 8.5; This is 8.2 percent. Relative to the current technological process, humidity 4.6; 3; We see a difference of 2.4%.

Figures 4-5 show a histogram of the change in cotton impurities by technological stages in the 1XK cleaner, which is used in the actual production of type II cotton, class 2 and type IV, class 2, and after using the heat generator. equipment in this purifier.

Figure 4. Changes in the degree of contamination of cotton raw materials after the technological process used

Figure 5. Changes in the degree of contamination of raw cotton after the recommended technological process

From the bar graph in Figure 4 above, it can be seen that the degree of soiling of cotton obtained from the cotton gin was 6.8% in II grade 2 class, 5.8% after the 1XK purifier installed on the stationary spinning machine, and 5.7% after the purifier . drying drum., pollution after the USK cleaning system 1.4%. Also impurities of cotton of class IV, class 2 after the technological stages are 12.8; 10.0; 9.6; was 2.5% [11-13].

With the recommended technological process (Fig. 5), cotton impurities are 6.8% in the 2nd grade, 6.8% after spinning and 0.9% after the final cleaning system, 12.8 in cotton of class IV, class 2; 8.5; 8.4; is 1.5% and is expected to fall to 1.5 and 1.0% compared to the current [14-16].

Figures 6-7 show histograms of changes in the efficiency of cleaning machines by technological operations in the current and proposed technological processes.

Figure 6. Changes in the cleaning efficiency of cotton raw materials after the applied technological process

It can be seen from the histogram that in the current technology, the cleaning efficiency of type II cotton in the 1XK cleaner on a stationary spinner is 14.7%, and in the UXK cleaning system it is 79.4%, and in type IV cotton it is 21.8% after 1XK, and in the UXK system it is 79.4% 8%.

In the proposed technology, the cleaning efficiency is 23.5% in 1XK for grade II cotton, 86.7% for the UXK system, compared with the current one by 8.8% and 7.3%, and for type IV cotton, the cleaning efficiency for 1XK is 33.5%, according to the UXK system it turned out to be 87.9%, which is 11.7% and 8.1% higher than the current one.

Figure 7. Changes in the cleaning efficiency of cotton raw materials after the proposed technological process

Conclusion

In table. 1 when comparing the results of processing of cotton raw materials of type II, class 2 and IV-type, class 2 with the current cleaning technology and technologies for cleaning from small impurities of the new design 1ХК total cleaning efficiency when cleaning using the current type II technology 2-79.4 %, in the class 79.8% when processing the 2nd grade of IV-type cotton. Defects and impurities in the fiber 2.2% and 4.2%, i.e. fiber of the 1st grade of good and 3rd grade of medium was obtained, the cleaning efficiency of the proposed technological process was 86.7% in grade II, grade 2, grade IV 2 was 87.9%, the number of defects and impurities of the produced fiber was 2, 0% and 4.0%, which indicates a high grade 1 and a good grade 3. It can be seen that the quality of the fiber improves by 0.1-0.2%. In addition, it has been found that the coolant consumption in the dryer drum is reduced by heating the cotton in a stationary spinning machine.

Cotton fiber heater can be installed in UXK system, ChX clarifier shaft and Gin machine shaft.

References:

1. Rozmetov R.I. Improving the technological process of drying high-grade cotton. Diss. F.d. (PhD). T.2020 y. 116 p.
2. Hamburg G.L. Research on the preservation of the natural properties of raw cotton during its drying. Diss. Ph.D. Tashkent. 1974.
3. Sadykov M. Improvement of feeding and internal devices of a drum dryer for raw cotton. Diss. Ph.D. Tashkent. 1984.
4. I.D. Madumarov. Improving the efficiency of the cleaning process based on the optimization of the heat and humidity state and uniform nutrition of raw cotton: Diss. Doctor of Technical Sciences, 2019, - p.181.
5. Decree of the Cabinet of Ministers of the Republic of Uzbekistan dated January 14, 2020 No. 21 “On measures to increase the level of mechanization of cotton harvesting in the regions of the republic”.
6. S. Usmanov, B.T. Umarkhodzhaev and others. Handbook on the primary processing of cotton. “AUTO-NASHR” LLC, 2019, pp. 179-182.
7. K.J. Jumaniyazov, I.Z. Abbazov, F.O. Egamberdiev. Materials of the Republican Scientific and Technical Conference "Innovative Solutions for Deep Processing of Textile Threads" to study the effect of mechanical cotton picking on spinning. Namangan 2019. -p.61-62.
8. Jabborov G.J. etc. "Technology of processing of cotton seeds". Textbook. (Tashkent - "Teacher" 1987).
9. Kh. Akhmadkhojaev, R. Muradov, Sh. Ergashev. Fiber separator. No. SU1541313 A. S, 07.02.90. Bulletin No. 5.
10. F. Sirojiddinov. “Improving the technological processes of cleaning raw cotton based on modeling”. Dissertation for the degree of Doctor of Philosophy of Technical Sciences. (Tashkent. 2019).
11. A.Kh. Bobamatov. Creation of an efficient design and improvement of scientific basic methods for cleaning cotton from fine litter. Dissertation for the degree of Doctor of Philosophy of Technical Sciences. (Tashkent. 2017).
12. Harmonized technology for primary processing of cotton (PDI 70-2017). Under the general editorship of A.S. Kamalov. JSC "Scientific Center of the Cotton Industry". Tashkent, 2017.- 91 p.
13. Anthony W.S. and A.C. Griffin. 2001 b. Fiber breakage at gins: moisture and heat. Cotton Gin and Oil Mill Press 102(24): 6-9 p.
14. Ulugmuradov H.Y., Abbazov I.Z., Muradov R.M. Study on improving the efficiency of cleaning the pile drum //IOP Conference Series: Earth and Environmental Science. – IOP Publishing, 2020. – T. 614. – №. 1. – S. 012127.
15. B.M. Mardonov and B.T. Abbazov “THEORETICAL STUDY OF THE INFLUENCE OF SPACING ON THE EFFICIENCY OF CLEANING BETWEEN COTTON PRODUCERS IN THE COTTON CLEANING AREA” Web of Scientist: International Scientific Research Journal 2021, 2 (12), 240-251p.
16. Abbazov I.Z. et al. FRACTIONAL COMPOSITION OF DUST PARTICLES EJECTED IN TECHNOLOGICAL PROCESSES // Science and Education. - 2021. - Vol. 2. - No. 3. - S. 129-135 p.